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Microsoft Defender External Attack Surface Management vs Microsoft Entra External ID comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Microsoft Defender External...
Ranking in Microsoft Security Suite
33rd
Average Rating
7.6
Reviews Sentiment
6.0
Number of Reviews
2
Ranking in other categories
Attack Surface Management (ASM) (14th)
Microsoft Entra External ID
Ranking in Microsoft Security Suite
18th
Average Rating
7.8
Reviews Sentiment
5.7
Number of Reviews
17
Ranking in other categories
Identity and Access Management as a Service (IDaaS) (IAMaaS) (9th), Customer Identity and Access Management (CIAM) (4th)
 

Mindshare comparison

As of January 2026, in the Microsoft Security Suite category, the mindshare of Microsoft Defender External Attack Surface Management is 0.8%, up from 0.2% compared to the previous year. The mindshare of Microsoft Entra External ID is 1.6%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Market Share Distribution
ProductMarket Share (%)
Microsoft Entra External ID1.6%
Microsoft Defender External Attack Surface Management0.8%
Other97.6%
Microsoft Security Suite
 

Featured Reviews

AndyChan3 - PeerSpot reviewer
General manager at a tech services company with 201-500 employees
Enhanced visibility and exposes vulnerabilities but needs more integration
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will move to full-scale production in another year, maybe Microsoft External Attack Surface Management…
FS
Consultant at Artifield
Offers strong identity unification but needs better customization
Microsoft Entra External ID can be improved with additional features, specifically customizable flexibility and a customizable user interface for the login dialog. Currently, the login dialog has very limited customization options, which only include font styles, colors, text messages, or brand icons. Last month, Entra ID introduced some customizable features in their login dialog, but this does not apply to Microsoft Entra External ID, indicating a significant gap between the two. In theory, Entra External ID can support many external identity providers where custom login dialogs could be integrated, potentially via SSO feature coordination, although I have not yet confirmed this. Hence, enhanced customizable login options and the ability to use attribute password logins are critical features that are required for Microsoft Entra External ID to gain dominance in the authentication market.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
"Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
"It seems to be better at protecting from cyberattacks."
"Microsoft Entra External ID offers numerous advantages; there's no need to maintain anything on-premises, which results in a significant IT infrastructure cost saving."
"The single sign-on access is the most useful feature we use."
"For policy management in my organization, I would say it is perfect."
"Primarily Microsoft Entra External ID SSO is valuable as it works with everything when it comes to integration."
"The most valuable feature for me is the firewall capabilities."
"When it comes to Microsoft Entra External ID, Microsoft itself is the best distributor."
"The times that I have gone into it, I found it easy to use and I haven't had any issues with it."
"The most beneficial feature for us is the ease of setup. With about five clicks, we can generate unique IDs and keys and set up in less than 30 minutes. We can also generate these for multiple years simultaneously, which is convenient."
 

Cons

"With Microsoft, support is always crazy, it's not easy to get support."
"The integration is not as seamless compared to competitors like Palo Alto."
"Further integration across different Microsoft products would be an improvement."
"I would like to see faster synchronization."
"Microsoft Entra External ID isn't a complete cloud-based account solution, as it must handle internal employees and collaborate with internal Active Directory."
"Single sign-on for external applications such as Oracle could be improved to be a little bit cheaper."
"The authentication methods available are very limited, and this presents a weak point."
"The cost is very high."
"The support engineers are not as skilled as our engineers. When they say something would not work, or there is no solution, we usually hear that Microsoft would not support this."
"The only problem that you might face with Microsoft now is their complex licensing model."
"The training generally is complicated to understand, leading us to often go through a managed service provider."
 

Pricing and Cost Advice

Information not available
"We don't pay separately for Microsoft Entra External ID as it's part of our Microsoft Exchange subscription."
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881,082 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
17%
Financial Services Firm
10%
Outsourcing Company
6%
Energy/Utilities Company
6%
Computer Software Company
14%
Financial Services Firm
12%
Manufacturing Company
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise6
 

Questions from the Community

What needs improvement with Microsoft Defender External Attack Surface Management?
Further integration across different Microsoft products would be an improvement. Introduction of more AI automation into the products would also be beneficial. The integration is not as seamless co...
What is your primary use case for Microsoft Defender External Attack Surface Management?
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will ...
What is your experience regarding pricing and costs for Microsoft Entra External ID?
The only problem that you might face with Microsoft now is their complex licensing model.
What needs improvement with Microsoft Entra External ID?
For the last four or five years, I have been in an IT manager function, focusing on making things happen and having technical persons execute tasks. In the last three months, I have transitioned to...
What is your primary use case for Microsoft Entra External ID?
I am looking for a new solution and investigating existing products. We are already working with Microsoft Intune and SOTI. I have been working in the past with a Kaseya product, specifically Datto...
 

Also Known As

No data available
Azure Active Directory External Identities
 

Overview

Find out what your peers are saying about Microsoft Defender External Attack Surface Management vs. Microsoft Entra External ID and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.